|Year|Competition|Venue|Position|Notes|
|---|---|---|---|---|
|2006|IAAF World Athletics Final|Stuttgart, Germany|5th|110 m hurdles|
|2007|World Championships|Osaka, Japan|4th (semis)|110 m hurdles|
|2008|World Indoor Championships|Valencia, Spain|4th (semis)|60 m hurdles|
|2008|Olympic Games|Beijing, China|3rd|110 m hurdles|
|2008|IAAF World Athletics Final|Stuttgart, Germany|1st|110 m hurdles|
|2010|World Indoor Championships|Doha, Qatar|3rd|60 m hurdles|
|2010|2010 Diamond League|Multiple Locations|1st|110 m hurdles|
|2013|2013 Diamond League|Multiple Locations|1st|110 m hurdles|
|2013|World Championships|Moscow, Russia|1st|110 m hurdles|

Question: the number of times david oliver placed 1st in 100m hurdles between the years 2006-2013.
Answer: 4